503 Service Unavailable

My cyberpanel suddenly just got 503 Service Unavailable. Don’t know what happen. Tried run the command “systemctl status gunicorn.socket” and got this result:

Please advice. Thank you.

what happens if you run ?

systemctl start gunicorn`

Same error I got:
# systemctl status gunicorn
● gunicorn.service - gunicorn daemon
Loaded: loaded (/etc/systemd/system/gunicorn.service; disabled; vendor preset: disabled)
Active: failed (Result: exit-code) since Tue 2018-07-10 02:23:55 +08; 16s ago
Process: 11659 ExecStop=/bin/kill -s TERM $MAINPID (code=exited, status=1/FAILURE)
Process: 11657 ExecStart=/usr/local/CyberCP/bin/gunicorn --pid /run/gunicorn/gucpid --bind 127.0.0.1:5003 CyberCP.wsgi (code=exited, status=203/EXEC)
Main PID: 11657 (code=exited, status=203/EXEC)

Jul 10 02:23:55 sgp-2gb2cpu-wpsites.pinoyserver.com kill[11659]: -q, --queue use sigqueue(2) rather than kill(2)
Jul 10 02:23:55 sgp-2gb2cpu-wpsites.pinoyserver.com kill[11659]: -p, --pid print pids without signaling them
Jul 10 02:23:55 sgp-2gb2cpu-wpsites.pinoyserver.com kill[11659]: -l, --list [=] list signal names, or convert one to a name
Jul 10 02:23:55 sgp-2gb2cpu-wpsites.pinoyserver.com kill[11659]: -L, --table list signal names and numbers
Jul 10 02:23:55 sgp-2gb2cpu-wpsites.pinoyserver.com kill[11659]: -h, --help display this help and exit
Jul 10 02:23:55 sgp-2gb2cpu-wpsites.pinoyserver.com kill[11659]: -V, --version output version information and exit
Jul 10 02:23:55 sgp-2gb2cpu-wpsites.pinoyserver.com kill[11659]: For more details see kill(1).
Jul 10 02:23:55 sgp-2gb2cpu-wpsites.pinoyserver.com systemd[1]: gunicorn.service: control process exited, code=exited status=1
Jul 10 02:23:55 sgp-2gb2cpu-wpsites.pinoyserver.com systemd[1]: Unit gunicorn.service entered failed state.
Jul 10 02:23:55 sgp-2gb2cpu-wpsites.pinoyserver.com systemd[1]: gunicorn.service failed.`

what happens if you run ?

systemctl start gunicorn`

Displays nothing.

not working gunicorn
systemctl start gunicorn
failed to start gunicorn.service unit gunicorn.service not found

I get same problem (error 503 when upgrade lastest version of cyberpanel). Then i try run then command then it is OK
Please try

pip uninstall urllib3
yum -y install python-urllib3
pip install --upgrade requests

Then : run upgade again

rm preUpgrade.sh
wget https://raw.githubusercontent.com/usmannasir/cyberpanel/1.8.0/preUpgrade.sh
chmod +x preUpgrade.sh
./preUpgrade.sh

I have frequent 503 errors
http://prntscr.com/pwhgdq

same thing. 503 errors randomly popping up until I m anually restart the server. has been happening for 6+ months

are you working to fix the issue at all? it’s obviously a common problem